Lifting-truck.



W. STUUENG. 5R.

LFFTING TRUCK,

APPLIC'AUON mm FEH.1,19i5.

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wA SjwEmGE Jn. LIFTENG TRUCK,

PPLICATON HLED FEB. Hl. 1915.

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connect a spring 27. rThe short arm 26 acts as a stop for hook 211 limiting its travel, when the. spring 27 operates to pull said hook back into its normal position, which operation will be hereinafter' described.

On the top of the head l, I place the bearing 28 carrying a pin 29, which pin supports the pawl 30 and extending forward on the pawl, I provide the trcadle 3l; the two being made integral and oper-ate on the pm 29 as a. pivotal point.

To the pawl 30 I connect the spring 32 Iwhich at its other end is fastened to front head l at point 33.

On the elevating platform I connect the bridge 34 extending across the platform and connecting at each side with link bars 8 8, and on the bridge, at its front I place an engaging hook 35 for the hook 24 and another engaging hoolr 3G for the pawl 30.

At thel. rear the bridge 34 is provided with a raised abutment' 3'? which limits the forward movement of the platform upon which the articles to be lifted are placed; these platforms are usually made of wood and are raised so that the truck can be placed under them when down in order to elevate same.

In order to strengthen the elevating frame I connect the bar 38 to link bars 8--8.

i Tooperate the truck when the elevating i platform is in its lowest position, the operator forces the hook 24 down into engagement with the hook 35 on bridge 34, as

' shown in I"ig.2. vThe handle 22 is then pulled into a horizontal position forcing the nk bars 8 whichv are connected to the bridge 34, to elevate on the links l0 and allow the pawl 30 to engage with the hook 36 on bridge 34,-thus locking the elevated platform with its load, and to disengage the hook 2li the operator again raises handle 22 and this forces the hook 24 rearwardly, until it passes out of contact with the hook 35, and then, through the spring 27 the hook 24 is then quickly and automatically pulled up into normal position against stop 26, see

Fig. 5; the spring 2'? having been placed at v.tension when the hook was first placed into engagement with the hook 35. In Fig. Il the platform is partly raised and not locked showing hook 24:' connected and held in position by the load on the elevating platform.

After the platform is raised and locked into position and the hook 24 has automatically been released from hook 35, the tongue or lever 22 is then free to turn in a complete circle laterally, thus allowing the fork 13 which carries the two front wheels 17 to turn in. all directions. When the elevating platform is down the Ahandle and front wheels can also be moved laterally and in a circle'A the same as when the platform is elevated; thus it will be seen that the handle and wheels are free to turn in all directions when the platform is down or.up. At no point in the range of this free turning movement of the handle, can the handle be placed in 'a position wherein the hook 24 can ythrough any movement of the handle or 0f the platform, become engaged with the hook 35, without first requiring manual foot or hand depression of the hook 24 into the engaging plane of the hook 35.

In order to lower the elevating platform after it has been elevated, the operator steps on treadle part 31 of pawl 30, thus disconnecting pawl 30 from hook 36, allowing the platform to descend.

same without departure from the s irit of the invention, and thus form modifications thereof, and I wish to be understood as claiming that such modifications will still fall within the scope of my invention.

What I claim as new and my invention and desire to secure by Letters Patent is:

l. In an elevating truck, in combination, a base, an elevating platform, a front steering wheel'having a swivel connection with said base, a steering handle pivoted to rock upon the free upper part of said swivel 'and having an unlimited range of steering movement, and means for connecting said latform to said handle to elevate said platform comprising a member carried by one of said parts and tending normally to remain in or to return to a position in which it will not interfere with the movement of said handle, the connections between said member and the other part being constituted by coperating engaging surfaces on said member and said part so arranged with respect 'to the direction of elevating movement as to form a positive platform elevating connection.

2. In an elevating truck, in combination, a base, an elevating platform, a front steering wheel mount having pivotal connection with said base, a steering handle pivoted to rock upon the free upper part thereof, and means for connecting said platform to said handle to elevate said platform comprising .a pivoted member carried by one of said parts and tending normally to remain in or to return' to a position in which it will not interfere with the movement of said handle, the connections between said pivoted member and the other part forming a positive platform elevating connection when said pivoted member is manually forced into engagement with said other art.

I n a lifting truck, the com ination with abase, Ian elevating platform and a pivoted steering handle, of means for connecting said platform to said handle to elevate -said platform, comprising a manually vroper- @anneau .am

able membet` connected to one of said parte and tending tomove out of connected ielation to the other into a position Wliei'e it will not intei'fere with movement of tlie handle when used for steering. y

l. ln a lifting truck, the combination with a baee5 an elevating platform and a handle levei` pivotally Varranged for steering movement, of means for elevatin r said platioim comprising a pivoted'mem er on one of said patte and a relatively7 linedmeinbei on the otlieiu of said parte, said pivoted member being normally out oi connecting position, in which it will not intel-:lere with the movement of said handle, said pivoted I'member and said relatively xetl member brought into inteiloeked coupling relation by movement *bl the handle and by manual torce applied to the pivoted niembeiI forcing said member ont of its normal position 'into the path ol engagement with the relatively lixed mernbeiu so that the platform can be raised by movement oit the handle, and provision 'for retaining the platform in elevated position.

5.11). a lifting truck, the Combination with a base, an elevating platform and a handle lever pivotally ai'iangecl for steering nieve-u rnent, and means for connecting said. plat loi-1n and handle lever to elevate tbe plat vsitima in vvliieli it will not interfere with the movement el said. lianclle 'tile oonneetione between said. pivoteel member and the other part forming a positive Platform elevating connection when said pivoted member is manually' :toi'oed into engagement with said otlieir patti V o., l trnolt oomjotieing a frame, a steeringl vvlieel iifiembet1 connected theie'witli, a handle connected to said steering Wheel member loi' guiding' the same3 said handle being pivoted to swing, an elevatingV iframe mounted on said main .trame and movable np and olovvn ielatively tlieieto9 and means` oaicried by said liandle and adapted to engage and lift said elet/ating frame when said handle le moving dovvnvvardlm said means .carried by the handle tending to automatically move out of conneeted felation. when the handle is moved. in a direction for die-- engagement, into a position ol' non-intel'n ference with the liandlefvflien need loi' steel"- lili 

